silverspaceship

I want to thank you for pointing me in the right direction. I tried setting Vtt to 1.35V and NB to 1.45V, and that helped—Prime95 and OCCT stress tests passed successfully. After that, I gradually lowered the NB voltage and Vtt. It seems I’ve found a sweet spot for 4x4GB DDR3 at 1066 MHz and a 400 FSB clock. My results are: - FSB Termination Voltage (Vtt): 1.28566V - North Bridge Voltage: 1.39172V The BIOS Voltage Monitor shows values slightly lower than those set: - FSB Termination Voltage (Vtt): 1.277V - North Bridge Voltage: 1.369V With these settings, all the stress tests continue to pass successfully. I’m not sure if I can go any lower. When I reduce Vtt to 1.272V, the large FFT test in Prime95 stops passing. Also (I’m not sure if this really had any effect), but in the BIOS settings I changed EPU II Phase Control from Auto to Full Phase. It seems that after this adjustment, the motherboard became more stable at lower Vtt and NB settings. I would also like to ask you, if I want to increase the RAM frequency from 1066 to 1600 at the same 400 FSB, for example, will I need to adjust Vtt and NB again? Or if I have already set them up and it is working stably, then there is no need to touch them?

Thx. As soon as I received it I replaced all the thermal pads and thermal paste on the motherboard. Although I did not scalp the NB. The NB temperatures are on average 50C and a maximum of 55. I tried gradually increasing the voltage on the NB up to 1.45V, but it didn't help. Should I increase the voltage further?

What about dual-channel? Is it only going to get worse? However, I still don't understand why I can't stably pass stress tests even with 1066 MHz at 400 FSB.

Recently, I managed to get a QX9770 and decided to play around with it on my Rampage Extreme, and here’s what I noticed. If I run a Prime95 stress test with large FFTs – it fails. Same with the OCCT memory test, it detects errors. The system is running at stock settings, I only set standard (minimal) values for CPU PLL, SB, and disabled DRAM read/write controls and some other default things. All other BIOS settings are on auto. I also tried different RAM – G.Skill 3x2GB and another set of Corsair Dominators 2x4GB – but the issue still persists, although I’m sure those sticks are in good condition. Then I tried lowering the FSB clock from the default 400 MHz to 333 MHz, and the problems disappeared. Prime95 and OCCT now pass without issues. What could be the problem? The Fujitsu caps are fine – I checked them all. I tried different DIMM slots on the motherboard (A2, B2) and (A1, B1) – that didn’t help. Though one 4GB stick seems to work fine at 400 FSB. I also tried different DRAM clocks from the default 1066 MHz up to 1600 MHz – that also doesn’t change anything. Is this an issue with BIOS settings, is the motherboard dying, or is it something to do with the quad core CPU?

Not sure if I should create a separate topic, so I'll ask here. Maybe someone has "extra" tall heatsinks for Corsair Dominator GT DDR memory, like the ones that were on cmgtx modules. Or maybe someone has dead cmgtx with whole heatsinks. I would love to buy them. I will also buy Corsair Dominator GT DDR3 4x4GB memory modules ver4.13 on Samsung d-die.

Thanks, I'll try again with just 2 sticks instead of 4, see if I can get 2000 MHz in this configuration. I'll also try to look for ver4.13 Dominators, but I suspect they'll be hard to find, especially 4 sticks.

Hi. I didn't want to necropost, so I created a new thread. I have an ASUS Rampage Extreme motherboard and decided to test it with 16GB of RAM. I saw on forums that theoretically it can support 16GB, even though according to the specs it should only support 8 GB. For this, I purchased and installed 4 sticks of Corsair Dominator GT CMT8GX3M2A2000C9, each 4GB, version 5.11 (all identical). After that, the motherboard booted into Windows without any issues, and all 16GB were successfully recognized. Additionally, I ran tests using HCI Memtest and TestMem5 for several hours to ensure everything was working stably (all tests passed without errors). All of this was done with stock configurations, without any overclocking. However, on the RAM modules I purchased, the rated speed is 2000 MHz with timings 9-10-9-27 at 1.65 V, so I tried to run them using an XMP profile at 2000 MHz. But no matter how hard I tried, I couldn't get 2000 MHz in this configuration; I tried just simply enabling XMP, as well as manually setting the values in the BIOS. I managed to get 500 FSB without any problems, but the memory maxed out at 1800 MHz (if I recall it correctly at 1.9V). So my question is: what is the problem with not being able to achieve 2000 MHz? Is it an issue with the memory, or is it because all 4 slots are populated, or should I adjust the voltage further? I'm just new to overclocking, so I apologize if this is some kind of dumb question 😅 (so not going to break world records, I just want to figure it out). CPU – Q9550; BIOS – Latest;

Bump. Still looking for EVGA 790i SLI FTW Digital PWM tho. If anyone would like to sell, please post here or DM me, I think we can negotiate for any price.

Available for what? 🙂

I'm also still looking for the EVGA nForce 790i SLI FTW Digital PWM and the Gigabyte GA-EP45T-Extreme. If anyone has one and would like to sell it, please get in touch with me.

I want to buy an Intel Core 2 Extreme QX9770 that is working and in good condition. Only interested in this processor and am not considering other options. I know there are options on eBay, but I'd prefer not to buy from China. Thanks.

I would really appreciate it.

I also want to buy the accessories for the ASUS Rampage Extreme X48 that came with it, including additional heatsinks. (bought, thanks for this Leeghoofd)

I'm not from the US, but if you can ship within the US and pack it well, it should be easy to work out.

Hi, I'm looking for working motherboards on Intel X48/P45 and Nvidia nForce 790i SLI Chipsets, Socket T (LGA 775). Asus Rampage Extreme (bought) Gigabyte GA-EP45T-Extreme (bought) EVGA nForce 790i SLI FTW Digital PWM (P/N: 132-YW-E180-A1) If suddenly someone sells it, please get in touch with me. Thanks.